Milos Raonic
Raonic suffered a thigh injury in March and returned to the tour after a three-month gap.
"It's a great comeback for me," said Federer, who was playing his first tournament after an 11-week break, having sidestepped the entire claycourt season.
Former winner Milos Raonic and this year's runner-up Kei Nishikori are set to return to next year's Brisbane International, organizers said on Monday.
